To complement our range of phase and intensity modulators we offer drivers and bias controllers. Our phase and intensity modulators can be operated over a broad range of wavelengths from 780 nm to 2.2 µm, and at low speed up to 40 GHz.
To boost the signal voltage to the levels suitable for the modulator we offer a range of RF drivers. These are available in a range of speeds and types according to the input signal. Selecting the correct driver ensures the input signal is faithfully reproduced, with no ringing or distortion.
Examples include the digital, analogue and pulsed drivers. The digital amplifiers are designed for various speeds of data transmission up to 40 GHz for both NRZ and RZ formats. The analogue drivers give linear amplification with low noise for applications such as radio over fibre. A separate driver is required for pulses because of their wider frequency content. These drivers generate clean optical pulses with sharp edges and no overshoot.
We also offer a range of bias controllers for use with intensity modulators. Factors such as temperature fluctuations can cause variations between the two arms that form the interferometer of an intensity modulator, which is known as drift. For long term stability we offer bias controllers that use feedback to compensate for the drift. These are based on dithered and dither-free solutions as benchtop or OEM boards.
